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參數(shù)資料
| 型號： | P89LPC9402FBD,557 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 32/60頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 8K 64-LQFP |
| 標(biāo)準(zhǔn)包裝： | 450 |
| 系列： | LPC900 |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 18MHz |
| 連通性： | I²C，SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測/復(fù)位，LCD，LED，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 23 |
| 程序存儲器容量： | 8KB（8K x 8） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 256 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.4 V ~ 3.6 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 64-LQFP |
| 包裝： | 托盤 |
| 其它名稱： | 935288631557 |
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P89LPC9402_1
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 22 April 2009
38 of 60
NXP Semiconductors
P89LPC9402
8-bit microcontroller with accelerated two-clock 80C51 core
7.27 LCD driver
7.27.1 General description
The LCD segment driver in the P89LPC9402 can interface to most LCDs using low
multiplex rates. It generates the drive signals for static or multiplexed LCDs containing up
to four backplanes and up to 32 segments. The LCD controller communicates to a host
using the I2C-bus. The I2C-bus clock and data signals for both the microcontroller and the
LCD driver are available on the P89LPC9402 providing system exibility. Communication
overhead to manage the display is minimized by an on-chip display RAM with
auto-increment addressing, hardware subaddressing, and display memory switching
(static and duplex drive modes).
7.27.2 Functional description
The LCD controller is a versatile peripheral device designed to interface microcontrollers
to a wide variety of LCDs. It can directly drive any static or multiplexed LCD containing up
to four backplanes and up to 32 segments. The display congurations possible with the
LCD controller depend on the number of active backplane outputs required. A selection of
display congurations is shown in Table 8. All of these congurations can be implemented
in a typical system.
The microcontroller communicates to the LCD controller using the I2C-bus.The
appropriate biasing voltages for the multiplexed LCD waveforms are generated internally.
The only other connections required to complete the system are to the power supplies
(VDD, VSS and VLCD) and the LCD panel chosen for the application.
7.27.3 LCD bias voltages
LCD biasing voltages are obtained from an internal voltage divider consisting of three
series resistors connected between VLCD and VSS. The LCD voltage can be temperature
compensated externally via the supply to pin VLCD. A voltage selector drives the
multiplexing of the LCD based on programmable congurations.
7.27.4 Oscillator
7.27.4.1
Internal clock
An internal oscillator provides the clock signals for the internal logic of the LCD controller
and its LCD drive signals. After power-up, pin SDA must be HIGH to guarantee that the
clock starts.
Table 8.
Selection of display congurations
Number of
7-segments numeric
14- segments alphanumeric
Dot matrix
Backplanes
Segments
Digits
Indicator
symbols
Characters
Indicator
symbols
4
128
16
8
16
128
3
9612126
12
96
264
884864
132
442432
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| P89LPC9408 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with two-clock 80C51 core 8 kB 3 V byte-erasable flash, 32 segment x 4 LCD driver, 10-bit ADC |
| P89LPC9408FBD | 功能描述:8位微控制器 -MCU 8K FL/10B ADC LCD DRIVER RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| P89LPC9408FBD,557 | 功能描述:8位微控制器 -MCU 8K FL/10B ADC LCD RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| P89LPC9408FBD557 | 制造商:NXP Semiconductors 功能描述:P89LPC9408FBD/LQFP64/TRAYDPM// |
| P89LPC952 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash with 10-bit ADC |
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